The RCBS Semi-Wadcutter Pistol Bullet Mould is manufactured by a company that has been manufacturing high-quality reloading equipment tools and accessories for over 60 years. This two-cavity product is machined using blocks made from solid cast iron each meeting specifications for the best possible accuracy and repeatable castings.Another benefit of purchasing this particular bullet mould is the 3/16-inch sprue plate made from solid steel and held firmly in place with spring washers and screws constructed from tempered steel. This mould also features blocks that are precision ground square along with steel alignment pins for ideal mating.